Abstract
Recent measurements of inclusive and exclusive semi-leptonic b branching ratios are reviewed. Model-independent analyses from ARGUS and CLEO confirm the value BR(b → ℓvX) = 10.4%, while new analyses from ALEPH obtain higher values above 11%. The difference is not consistent with measured values of b hadron lifetime. New measurements of BR(B → D* ℓv) from CLEO and ALEPH are in good agreement. First measurements of B → D* πℓv branching ratios from OPAL, DELPHI, and ALEPH confirm indirect evidence for a large D** component in semi-leptonic B decays.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 851-861 |
| Number of pages | 11 |
| Journal | Nuovo Cimento della Societa Italiana di Fisica A |
| Volume | 109 |
| Issue number | 7 |
| State | Published - Jun 1 1996 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Nuclear and High Energy Physics
- Astronomy and Astrophysics